Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2023-32249
CVE-2023-32249:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2023-32249 is a vulnerability in the Linux kernel's ksmbd component that was discovered and disclosed in April 2023. The vulnerability affects systems with ksmbd enabled and involves improper authentication handling in the Multichannel feature (ZDI Advisory, NVD).
Technical details
The vulnerability exists within the handling of Session ID within Multichannel feature of ksmbd. The specific flaw stems from the lack of proper isolation when performing lookup on a session. The vulnerability has been assigned a CVSS score of 6.5 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N) (ZDI Advisory).
Impact
An attacker can leverage this vulnerability to hijack arbitrary live sessions on the system. The vulnerability allows remote attackers to hijack sessions on affected installations of Linux Kernel, though authentication is not required to exploit this vulnerability (ZDI Advisory).
Mitigation and workarounds
Linux has issued an update to correct this vulnerability. The patch returns STATUSNOTSUPPORTED if the binding session is a guest user, effectively preventing guest users from using multichannel functionality (ZDI Advisory, NVD).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management